Grodan A-OK 36/40 6/15 Starter Cubes, 1.5" x 1.5", 30 sheets of 98 biological fertilizer You need to add nutrients

You need to add nutrients when you first water the substrate (use your nutrient supplier's recommendations)

Trace elements

So small your little bro can carry it and your trunk will transport it

Flower Footprint: 3 ft x 3 ft

Grodan A-OK 36/40 6/15 Starter Cubes, 1.5" x 1.5", 30 sheets of 98 biological fertilizer You need to add nutrientsGrodan Stonewool (rockwool) is made from molten rock spun into cotton candy like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen